565257065 has 16 divisors (see below), whose sum is σ = 683874576. Its totient is φ = 448512000.

The previous prime is 565257053. The next prime is 565257073. The reversal of 565257065 is 560752565.

It can be written as a sum of positive squares in 8 ways, for example, as 237067609 + 328189456 = 15397^2 + 18116^2 .

It is not a de Polignac number, because 565257065 - 2¹² = 565252969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352265 + ... + 353865.

It is an arithmetic number, because the mean of its divisors is an integer number (42742161).

Almost surely, 2^565257065 is an apocalyptic number.

It is an amenable number.

565257065 is a deficient number, since it is larger than the sum of its proper divisors (118617511).

565257065 is a wasteful number, since it uses less digits than its factorization.

565257065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140.

The product of its (nonzero) digits is 315000, while the sum is 41.

The square root of 565257065 is about 23775.1354359970. The cubic root of 565257065 is about 826.8283003369.

The spelling of 565257065 in words is "five hundred sixty-five million, two hundred fifty-seven thousand, sixty-five".